Ninja: Refactor restat to be a string internally

This will allow values other than "" and "1" to be generated in
the rules.ninja file.

Source/cmGlobalNinjaGenerator.cxx

@@ -242,7 +242,7 @@ void cmGlobalNinjaGenerator::AddCustomCommandRule()
                 /*deptype*/ "",
                 /*rspfile*/ "",
                 /*rspcontent*/ "",
-                /*restat*/ true,
+                /*restat*/ "1",
                 /*generator*/ false);
 }
 
@@ -309,7 +309,7 @@ cmGlobalNinjaGenerator::AddMacOSXContentRule()
                 /*deptype*/ "",
                 /*rspfile*/ "",
                 /*rspcontent*/ "",
-                /*restat*/ false,
+                /*restat*/ "",
                 /*generator*/ false);
 }
 
@@ -344,7 +344,7 @@ void cmGlobalNinjaGenerator::WriteRule(std::ostream& os,
                                        const std::string& deptype,
                                        const std::string& rspfile,
                                        const std::string& rspcontent,
-                                       bool restat,
+                                       const std::string& restat,
                                        bool generator)
 {
   // Make sure the rule has a name.
@@ -408,10 +408,10 @@ void cmGlobalNinjaGenerator::WriteRule(std::ostream& os,
     os << "rspfile_content = " << rspcontent << "\n";
     }
 
-  if(restat)
+  if(!restat.empty())
     {
     cmGlobalNinjaGenerator::Indent(os, 1);
-    os << "restat = 1\n";
+    os << "restat = " << restat << "\n";
     }
 
   if(generator)
@@ -607,7 +607,7 @@ void cmGlobalNinjaGenerator::AddRule(const std::string& name,
                                      const std::string& deptype,
                                      const std::string& rspfile,
                                      const std::string& rspcontent,
-                                     bool restat,
+                                     const std::string& restat,
                                      bool generator)
 {
   // Do not add the same rule twice.
@@ -1122,7 +1122,7 @@ void cmGlobalNinjaGenerator::WriteTargetRebuildManifest(std::ostream& os)
             /*deptype=*/ "",
             /*rspfile=*/ "",
             /*rspcontent*/ "",
-            /*restat=*/ false,
+            /*restat=*/ "",
             /*generator=*/ true);
 
   cmLocalNinjaGenerator *ng = static_cast<cmLocalNinjaGenerator *>(lg);
@@ -1206,7 +1206,7 @@ void cmGlobalNinjaGenerator::WriteTargetClean(std::ostream& os)
             /*deptype=*/ "",
             /*rspfile=*/ "",
             /*rspcontent*/ "",
-            /*restat=*/ false,
+            /*restat=*/ "",
             /*generator=*/ false);
   WriteBuild(os,
              "Clean all the built files.",
@@ -1229,7 +1229,7 @@ void cmGlobalNinjaGenerator::WriteTargetHelp(std::ostream& os)
             /*deptype=*/ "",
             /*rspfile=*/ "",
             /*rspcontent*/ "",
-            /*restat=*/ false,
+            /*restat=*/ "",
             /*generator=*/ false);
   WriteBuild(os,
              "Print all primary targets available.",

Source/cmGlobalNinjaGenerator.h

@@ -125,7 +125,7 @@ public:
                         const std::string& deptype,
                         const std::string& rspfile,
                         const std::string& rspcontent,
-                        bool restat,
+                        const std::string& restat,
                         bool generator);
 
   /**
@@ -245,7 +245,7 @@ public:
                const std::string& deptype,
                const std::string& rspfile,
                const std::string& rspcontent,
-               bool restat,
+               const std::string& restat,
                bool generator);
 
   bool HasRule(const std::string& name);

Source/cmNinjaNormalTargetGenerator.cxx

@@ -256,7 +256,7 @@ cmNinjaNormalTargetGenerator
                                         /*deptype*/ "",
                                         rspfile,
                                         rspcontent,
-                                        /*restat*/ false,
+                                        /*restat*/ "",
                                         /*generator*/ false);
   }
 
@@ -278,7 +278,7 @@ cmNinjaNormalTargetGenerator
                                           /*deptype*/ "",
                                           /*rspfile*/ "",
                                           /*rspcontent*/ "",
-                                          /*restat*/ false,
+                                          /*restat*/ "",
                                           /*generator*/ false);
     else
       this->GetGlobalGenerator()->AddRule("CMAKE_SYMLINK_LIBRARY",
@@ -292,7 +292,7 @@ cmNinjaNormalTargetGenerator
                                           /*deptype*/ "",
                                           /*rspfile*/ "",
                                           /*rspcontent*/ "",
-                                          /*restat*/ false,
+                                          /*restat*/ "",
                                           /*generator*/ false);
   }
 }

Source/cmNinjaTargetGenerator.cxx

@@ -477,7 +477,7 @@ cmNinjaTargetGenerator
                                       deptype,
                                       /*rspfile*/ "",
                                       /*rspcontent*/ "",
-                                      /*restat*/ false,
+                                      /*restat*/ "",
                                       /*generator*/ false);
 }